Rainfall erosivity and rainfall return period in the experimental watershed of Aracruz, in the coastal plain of Espirito Santo, Brazil

Detalhes bibliográficos
Autor(a) principal: Martins, Sérgio Gualberto
Data de Publicação: 2010
Outros Autores: Avanzi, Junior Cesar, Silva, Marx Leandro Naves, Curi, Nilton, Norton, Lloyd Darrell, Fonseca, Sebastião
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFLA
Texto Completo: http://repositorio.ufla.br/jspui/handle/1/45865
Resumo: Knowledge on the factors influencing water erosion is fundamental for the choice of the best land use practices. Rainfall, expressed by rainfall erosivity, is one of the most important factors of water erosion. The objective of this study was to determine rainfall erosivity and the return period of rainfall in the Coastal Plains region, near Aracruz, a town in the state of Espírito Santo, Brazil, based on available data. Rainfall erosivity was calculated based on historic rainfall data, collected from January 1998 to July 2004 at 5 min intervals, by automatic weather stations of the Aracruz Cellulose S.A company. A linear regression with individual rainfall and erosivity data was fit to obtain an equation that allowed data extrapolation to calculate individual erosivity for a 30-year period. Based on this data the annual average rainfall erosivity in Aracruz was 8,536 MJ mm ha-1 h-1 yr -1. Of the total annual rainfall erosivity 85 % was observed in the most critical period October to March. Annual erosive rains accounted for 38 % of the events causing erosion, although the runoff volume represented 88 % of the total. The annual average rainfall erosivity return period was estimated to be 3.4 years.
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spelling Rainfall erosivity and rainfall return period in the experimental watershed of Aracruz, in the coastal plain of Espirito Santo, BrazilErosividade da chuva e tempo de retorno na bacia experimental da Aracruz, região dos tabuleiros costeiros brasileiroskinetic energyR-factorUniversal Soil Loss Equation (USLE)Energia cinéticaFator RKnowledge on the factors influencing water erosion is fundamental for the choice of the best land use practices. Rainfall, expressed by rainfall erosivity, is one of the most important factors of water erosion. The objective of this study was to determine rainfall erosivity and the return period of rainfall in the Coastal Plains region, near Aracruz, a town in the state of Espírito Santo, Brazil, based on available data. Rainfall erosivity was calculated based on historic rainfall data, collected from January 1998 to July 2004 at 5 min intervals, by automatic weather stations of the Aracruz Cellulose S.A company. A linear regression with individual rainfall and erosivity data was fit to obtain an equation that allowed data extrapolation to calculate individual erosivity for a 30-year period. Based on this data the annual average rainfall erosivity in Aracruz was 8,536 MJ mm ha-1 h-1 yr -1. Of the total annual rainfall erosivity 85 % was observed in the most critical period October to March. Annual erosive rains accounted for 38 % of the events causing erosion, although the runoff volume represented 88 % of the total. The annual average rainfall erosivity return period was estimated to be 3.4 years.O conhecimento dos fatores que influenciam a erosão hídrica é de fundamental importância no planejamento do uso do solo. Dos fatores que alteram a erosão, a precipitação pluvial, expressa pela erosividade da chuva, é um dos mais importantes. Assim, o objetivo deste estudo foi determinar a erosividade e o tempo de retorno para a região dos Tabuleiros Costeiros, no município de Aracruz, ES. Para o cálculo da erosividade, foram utilizados dados pluviométricos de janeiro de 1998 a julho de 2004, obtidos em estações climatológicas automatizadas, localizadas em área experimental da Aracruz Celulose AS, que, para este estudo, geraram dados de 5 em 5 min. A análise de regressão linear entre precipitação pluvial e erosidade para esse período permitiu obter uma equação, a qual foi usada para estimar os valores de erosidade para uma série histórica de 30 anos. A erosividade média anual foi de 8.536 MJ mm ha-1 h-1 ano -1. O período crítico em relação à erosão hídrica foi entre os meses de outubro e março. As chuvas erosivas representaram 38 %, mas, em volume, isso representou 88 % do total precipitado por ano. O período de retorno para o valor médio de erosividade foi estimado em 3,4 anos.Sociedade Brasileira de Ciência do Solo2020-12-14T17:05:57Z2020-12-14T17:05:57Z2010info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfMARTINS, S. G. et al. Rainfall erosivity and rainfall return period in the experimental watershed of Aracruz, in the coastal plain of Espirito Santo, Brazil. Revista Brasileira de Ciência do Solo, Viçosa, MG, v. 34, n. 3, p. 999-1004, maio/jun. 2010. DOI: https://doi.org/10.1590/S0100-06832010000300042.http://repositorio.ufla.br/jspui/handle/1/45865Revista Brasileira de Ciência do Soloreponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLAhttp://creativecommons.org/licenses/by-nc/4.0/info:eu-repo/semantics/openAccessMartins, Sérgio GualbertoAvanzi, Junior CesarSilva, Marx Leandro NavesCuri, NiltonNorton, Lloyd DarrellFonseca, Sebastiãoeng2020-12-14T17:07:06Zoai:localhost:1/45865Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2020-12-14T17:07:06Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false
dc.title.none.fl_str_mv Rainfall erosivity and rainfall return period in the experimental watershed of Aracruz, in the coastal plain of Espirito Santo, Brazil
Erosividade da chuva e tempo de retorno na bacia experimental da Aracruz, região dos tabuleiros costeiros brasileiros
title Rainfall erosivity and rainfall return period in the experimental watershed of Aracruz, in the coastal plain of Espirito Santo, Brazil
spellingShingle Rainfall erosivity and rainfall return period in the experimental watershed of Aracruz, in the coastal plain of Espirito Santo, Brazil
Martins, Sérgio Gualberto
kinetic energy
R-factor
Universal Soil Loss Equation (USLE)
Energia cinética
Fator R
title_short Rainfall erosivity and rainfall return period in the experimental watershed of Aracruz, in the coastal plain of Espirito Santo, Brazil
title_full Rainfall erosivity and rainfall return period in the experimental watershed of Aracruz, in the coastal plain of Espirito Santo, Brazil
title_fullStr Rainfall erosivity and rainfall return period in the experimental watershed of Aracruz, in the coastal plain of Espirito Santo, Brazil
title_full_unstemmed Rainfall erosivity and rainfall return period in the experimental watershed of Aracruz, in the coastal plain of Espirito Santo, Brazil
title_sort Rainfall erosivity and rainfall return period in the experimental watershed of Aracruz, in the coastal plain of Espirito Santo, Brazil
author Martins, Sérgio Gualberto
author_facet Martins, Sérgio Gualberto
Avanzi, Junior Cesar
Silva, Marx Leandro Naves
Curi, Nilton
Norton, Lloyd Darrell
Fonseca, Sebastião
author_role author
author2 Avanzi, Junior Cesar
Silva, Marx Leandro Naves
Curi, Nilton
Norton, Lloyd Darrell
Fonseca, Sebastião
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Martins, Sérgio Gualberto
Avanzi, Junior Cesar
Silva, Marx Leandro Naves
Curi, Nilton
Norton, Lloyd Darrell
Fonseca, Sebastião
dc.subject.por.fl_str_mv kinetic energy
R-factor
Universal Soil Loss Equation (USLE)
Energia cinética
Fator R
topic kinetic energy
R-factor
Universal Soil Loss Equation (USLE)
Energia cinética
Fator R
description Knowledge on the factors influencing water erosion is fundamental for the choice of the best land use practices. Rainfall, expressed by rainfall erosivity, is one of the most important factors of water erosion. The objective of this study was to determine rainfall erosivity and the return period of rainfall in the Coastal Plains region, near Aracruz, a town in the state of Espírito Santo, Brazil, based on available data. Rainfall erosivity was calculated based on historic rainfall data, collected from January 1998 to July 2004 at 5 min intervals, by automatic weather stations of the Aracruz Cellulose S.A company. A linear regression with individual rainfall and erosivity data was fit to obtain an equation that allowed data extrapolation to calculate individual erosivity for a 30-year period. Based on this data the annual average rainfall erosivity in Aracruz was 8,536 MJ mm ha-1 h-1 yr -1. Of the total annual rainfall erosivity 85 % was observed in the most critical period October to March. Annual erosive rains accounted for 38 % of the events causing erosion, although the runoff volume represented 88 % of the total. The annual average rainfall erosivity return period was estimated to be 3.4 years.
publishDate 2010
dc.date.none.fl_str_mv 2010
2020-12-14T17:05:57Z
2020-12-14T17:05:57Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv MARTINS, S. G. et al. Rainfall erosivity and rainfall return period in the experimental watershed of Aracruz, in the coastal plain of Espirito Santo, Brazil. Revista Brasileira de Ciência do Solo, Viçosa, MG, v. 34, n. 3, p. 999-1004, maio/jun. 2010. DOI: https://doi.org/10.1590/S0100-06832010000300042.
http://repositorio.ufla.br/jspui/handle/1/45865
identifier_str_mv MARTINS, S. G. et al. Rainfall erosivity and rainfall return period in the experimental watershed of Aracruz, in the coastal plain of Espirito Santo, Brazil. Revista Brasileira de Ciência do Solo, Viçosa, MG, v. 34, n. 3, p. 999-1004, maio/jun. 2010. DOI: https://doi.org/10.1590/S0100-06832010000300042.
url http://repositorio.ufla.br/jspui/handle/1/45865
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv http://creativecommons.org/licenses/by-nc/4.0/
info:eu-repo/semantics/openAccess
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eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Sociedade Brasileira de Ciência do Solo
publisher.none.fl_str_mv Sociedade Brasileira de Ciência do Solo
dc.source.none.fl_str_mv Revista Brasileira de Ciência do Solo
reponame:Repositório Institucional da UFLA
instname:Universidade Federal de Lavras (UFLA)
instacron:UFLA
instname_str Universidade Federal de Lavras (UFLA)
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institution UFLA
reponame_str Repositório Institucional da UFLA
collection Repositório Institucional da UFLA
repository.name.fl_str_mv Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)
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